System and apparatus for recording electric signals.



l W. W. ALBXANDEMZ E'. T. KBIM. 1:. 12mm, ADMINI-STRATOWOP W.W'.jALEXANp'BR,1111011);v SYSTEM AND APPARATUS POR RECORDING ELECTRICSIGNALS.

I /Q Q S Q S/ .WT i!! W. W. ALEXANDER & E. T.-KE1M. 'E. T. KEIM,ADMINISTRATOR OP W. W. ALEXANDER, DBC'D. SYSTEM AND APPARATUS .PORRBGORDNG'ELBCTRIG SIGN-ALS.

-Paented JaI1'.21,-191I3.

` Y -APLIGATION FILED 11213.19, 191'1.' 1,059,780

9 SHEETS-'SHEET 2.

IVTNESSES:

W. VW.ALEXANDER Az E. T. KEIM. T. KEIM, ADMINISTRATOR DI'. W. W.ALEXANDREi DEOD. SYSTEM AE APPARATUS EOE EEGOEDING ELECTRIC SEGNALE.1,050,780.`

'APPLIGAIION FLED APR.19, 1911."

' Patented Jan. 21, 1913.

9 `SHEETSI-SHEET 3.

TVI/E/VTOR W. WLALEXANDBR & E. T. 4KEIM. E. T. Kmmnmmsmo orlw. w.ALEXANDER, Dnojn. SYSTEEM AND APPARATUS FOR RECORDING ELECTRIC SIGNALS.

APPLIOATION FILED APR. 19, 191'1.

' f Patented Jan. 21, 1913.

9 sHnETssHEET 4.

W. Wl ALEXANDER & E. T. KEIM. E. T. KEIM, ADMINISTRATOR o r w. w.lALEXANDRE, DEG'D. SYSTEM`AND APPARATUS .FOR RECORDING ELECTRIC SIGNALS.

- f APPLICATION FILED APR. 19, l'1911. 1,050,780. l

Patented .1311.21, 1913.

' 9 sHEE'TssHEBT 5.

w/vEssEs.

f TTORNEY. N

l -W. W. ALEXANDER & B. T. KBII'M., E. 121ml) ADMINISTRATOR or W. W.ALEXANDER, DBU'D.

SYSTEM AND APPARATUS POB BEGJRDING ELECTRIC `SIGfNALS.

. I APPLICATION FILED APR.19,1911. 1,050,780. Patented La,1`1.21,.191;s.

I o SHEETS-SHEET 1.

WL W. ALEXANDER & E.- T. KEIMJ.

E. T. KEIM, ADMINISTRATOR OP-W. W. ALEXANDER, DEGD. SYSTEM AND APPARATUSEOEEEGOEDING ELECTRIC SIGNALS.

Paented Jan-21,1913

e'sEEETssHEET APPLICATION FILED APR.19, 1911 W. W. ALEXANDER & E. T.KEIM. E. T. um, ADMINISTRATOR or w. W. ALEXANDER; Imm).4 SYSTEM. ANDAPPARATUS FOB. RECORDING ELECTRIC SGNALS.

APTLGATION FILED APB.19, 1911.`

Patented t13411.21, 1913.

0 SHEETS-SHEET 9.

.am t

.i sTArwr-nir OFFICE.

'WILLIAM W. ALEXANDER AND EDWARD T. KEIM, or DENVER, COLORADO; SAIDKEIN;

.ADMINISTRATOR OF SAID ALEXANDER, DECEASED, ASSIGNOR, BY MESNE ASSTCN-MENTS, TO THE PROTECTIVE SIGNAL MANUFACTURING COMPANY, A CORPORATION OFCOLORADO.

srjsfrisivr 'AND ArrARA'rUs ron REOORDINGAELECTRIO sreNALs;

To all whom t mayconccm: Y

.Be it known that we, VILLIAM lV. ALEX- ANDER andEDWARD T. Kmmcitizensof the United Statesof America, residing at Denver, in the county ofDenver and State of Colorado, have invented certain new and usefulImprovements in Systems and Apparatus for Recording Electric Signals, ofwhich the following is a specification.

I' -10. Our invention relates to a system and apparatus 'for recordinglelectrically transmitte'd signals and more particularly to the receivinginstruments of telegraphic systems in which the transmitting instrumentsare `of 'a character .to transmit the respective numbers of the stationsat which they are installed by an intermittent. opening or closmg of theelectr-1c circuit in which they are connected.

I '2*0 The principalbbject of the present invenl ytion resides in theprovision of an electromechanical instrument of simple construe'- tionby which diiferent signals or messages --sent from a number of stationsin a syste-m 0f telegraphy, are automatically recorded the transmittinginstrument, and a time- 40 recording device which is automaticallyYactuated at regular intervals of predeter' minedA duration, to' produceupon the same "sheet a series of equidistant impressions for the purposeof establishing for future 44 5' reference the time of day at which theA"ually received. f In extensive telegraphlc systems of' the characterto whichl our lnventionmore particularly appertaixis, aplurality oftransmitting instruments are connected in one recorded signals ormessages were individ- Specation of Letters Patent. I Patented all..21,- Application filed April 19, 1911. Serial No. 622,017. i

circuit with the central receiving instrument at different p oints'ofthe` line, and as it would be impractical to vplace allv the -st-ationsof an extensive system in onescircuit', a number of, circuits areprovided,l all of which may be `connected with one -commonsourceofelectricity.

For the purpose of simplifying-.the constructlon of. the vreceivinginstrument" as?.

well as to reduce 'the lamount of work vrequiredin examining,translating or .copyin the records,'or in filing them' forffuture ree'rence, -we combine in'-systems of Vthe above description-,in oneinstrument, a plu-i ralityA of alined sig'nalf recording `units -connected respectively in the several 'circuits' in association with/lonerecord-sheet `which moves, transversely tothe-'line of unitsyand withone or ftwoftime recording devices'n placed at the ends` of the seriesof units so that all the impressions 'produced-bythe latter` will b eassembled-upon thefonefsh'eet togetherv with equidistant marginalimpress1ons, which by their positions' relative to' the signal-records,determine atlfivhat jhours or fractions thereof, they v''ereJ received.-

In more extensive telegraphlc-systems the signal recordingunits maybe'divide'd into two or more series which', while assembled in oneinstrument,A recordthe signals of `their respective units upon separate'sheets of paper which, however, are moy'e'd'byone`common#timeecontrolled mechanism,l I y In the accompanying -drawlngsaninst-rib ment is represented in which' t\vo series of signal-recordingdevices-each composed of thirteen un1ts,are assembled'to recordjtl'iesof signals transmitted through their r'sp ec tive circuits u pontWOcOntinuOUs sheets of paper, which are moved longitudinally transverseto the alinement ofthe units by one common Atiin'e-cmitroll'edAl'nechanism which' also serves to' actuate the time recordingcontrivances of which there are two forv each of the abovementionedseries.

The several signal' recording vdevices comprised in one receivinginstrument -are `identical in constructionV and f operate independentlyfrom each other and inasmuch as 'the construction of the said deviceinvolves an invention separate from the present one it sy i 1,050,780 .Y

has-been made thel subject ofA another application for patent. l V i Inthe drawings, in the various views of 'which like parts are similarlydesignated,

Figure 1, represents a plan view of the entire instrument asA outlinedabove, Fig. 2, a ront'ele'va'tion of the same, Fig. 3, a verticalsection taken along the line 3-3 Fig.

1, Fig. a similar section taken along the line 4-4, Fig. 2, Fig. 5, afragmentary the preceding figure, is actuated,Fig. 7, a

ragmentary view of'the continuous lsheet o'paper upon which the electricsignals and the time atwhich they are received, are-rccorded. Fig. l8, adiagrammatic viewl of the electrical connections included inv thetelegraphic system at the receivin vend of which therccording-instrument'is installed,

Fig. A9, a side elevation of one of the devices -bywhich the signals arerecorded upon the .2,5l

' Vvlevvof the part of the saiddevlce which -sheet shown-.inFig. 7. jFig. l0, anenlarged carries the stylus by means of which theimpressionsare produced, Fig.,11, alli'oriztmf tal section taken along-the line11-11, Fig.

9, Fig, 12, a similar section along theline 'l2-12 Fig. 9. VFig. -l3,*aerspective view of the bell crank-leverl'nc uded in the construction-ofthe device shown in Fig. 9, Fig.

14, a Side elevatidn of one .of the contrivances designed to designateby impressions upon the marginalportions.' of the sheets shown in Fig.7, the time at which the vari-d dra lous signals are recorded, Fig. 15,a section ,taken along the line 15d-15, Fig. 14,

16, an enlarged plan view of the part ofthe device shown in Fig. 14,which carries the stylus b means of which the impressions are prod uced,Fig. 17, an elevation of the mechanism 'of a transmitting `instrument ofthe character employed in telegraphie systems ofthe clas to which thepresent in- A vention, particular y -appertains, Figs. 18,

19, 20 and 21 enlarged sectional views taken alon the line 18-1'8, Fig.9, respectively illus rating the positions successivelyassumed-bytlrestylus in recording a signal se 'to-the device shown inFig. 9, and,

i lgs'. 22, 23, 24 and 25 similar V views taken along the line 22422,Fig. 14, to illustrate thesuccessivepositions of the stylus comprised in-the time-recording contrivance,

-whilen impression is being produced therebylponthe 4sheet shown in Fig.7.

' Referrii `to the drawings by numerical .referenc.c aracters, `thenumeral 2 designates the skeleton frame upon which the various oeratingparts of the. instrument are assem led and which is preferably inclosedin a casing, which for `obvious reasons been omittadfrom the drawings.

' The signalrecording units, which as here- Y inbefore explained, arearranged in two groups, are .design'atedby the numeral 3, while thedevices which aredisposedat opposite ends ofthe said series tolperiodically record4 recurrent points offtmc, are ,i ndi.; cated'bythe-character.4f/"- The continuous vsheets ofpaper'or--other suitablematerial upon which-the records are made, and designated in. thedrawings 7 5 by the numeral .5, are wo1v1nd, uponspools.y 6 which arerotatably mounted at the`lower. portion of the frame 2. The "sligets-.QP-,area I led-'from the resplectiv s dols/throdgh'the medium of paraeli- 'rollersfif'over-.w horizontally disposed nvlyplates wlch` providestrikingsurfaces fore-fthe stylifof the vseveral recording devices.which are '5a-re of 's.u licient widthjto receive the-.ima pressions ofall-the recording .d'e'svio-e's'com prised in each of therespectlveseries.' if Y. 1 if. For thel purpose vof clearer4illustrationithe record-sheets 5 have been representedfinvthe 100'various elevations and ysectionalv/iews of the wmgsvby means of headash-dot lines.` lhe time-controlled fee `mechtuiism "above referred to,consists'o f an electrof magnet 13, the windings owhich-are 105105 catedin. 'an .electric Ycircuit with -va resilient contact blade 14 and atherewith .engagin' contact-point15 bothof. whichare secure `inoperative proximity to the pendulum 16 'of a clock movement 17 ofVordinary. con 110 struction, such as is shown in Fig. 6. Thependulum 1Qcarries'a curved piece 18 which during each oscillation thereof.temporarily separates the contactA point 15' 'rom'the blade 14witlrwhilchit 1snormally, in en- 115 gagement, with 4the result'thatwhile the clock movement is in action,' thefimagnet 13 is periodicallyenergized. 1

The armature. 19 of the:e1 ectromagnet is connected with a. leven20-:which' is` ful,- .120 crumed upon .apostl'flml 'swhgh is at-A tached.at one pf its end ft the retracthg spring 22 which normally maintainsthe armature in the position in'whichit is separated from thecoreof.themagneticcoil.4 A .125 spring-controlled pawl 23 pivotallymounted.atlthe opposite 'end-ofthe lever 20,` is disposed toengage during themovement of the amature 19 toward the magnet, with the teeth of a.'ratchetfwheel 24 and to move` 13o Iiis inscee the same about its axis ofrotation until arrested by l ntact with an adjustable stop 25. YV henthe attractive torce oi the magnet. ceases, the: retracting spring 2i),and the spring 2G which acts directly upon the pawl, return. the latterto its original position vwhich is shown in full lines in Fig. 5 et thedrawings, .and it will. thus be seen that during the uniform oscillatorymovement of the pendulum 16 of. the clock movement the ratchetwheel isintermittently rotated at equal intervals and through arcs of equallength the extent of which may lbe varied by adjustment of the stop 25.

A spring pawl 2'? which constantly Aengages the teeth ofthewheel 24, isprovided to prevent retrograde movement of the same, while an adjustablesto-p 28 limits the upward movement of the lever 20. The intermittentrotary motion of the ratchet wheel 24, is by means of a vpinion 29secured upon its spindle transmitted to a gear-wheel 3()4 vwhich ismounted upon the vframe-EZ and -12 which as hereinbefore explained', are

the movement of the last mentioned wheel is by means of a. therewithconcentric pinion 31 imparted .to one of the gear-wheels connected withthe vwinding drums l0.`

It willbe understood from the above description that through theinstrumentality 'of the gear train, the sheets 5 are wound upon therespective drums 10 at a. rate ot speed which is regulated by themovement of the clock and that in consequence, during tion shown inthedrawings, this associay which ordinarily strikes upon a gong or tion isestablished through the medium of the striking gear trainl? whichperiodically actuatcs `the lever 33' of the hammer pring tovaudiblyannounce the hours of the A contact 34 secured upon the clockframe inthe path of the lever 33, constitutes a terminal of a normally opencircuit in which the lever is connected through t-he medium of themetallic' parts lof the clock and the time-recording devices 3 eachinclude an electromagnet 35, the coil of which is located in the saidcircuit- 1When at the end of each hour, or aliquot part thereof, thestriking gear of the clock-movement is released to impart to the lever33 a succession of oscillatory movements in. accordanee lcomprised, ineach series.

ln the construe' with the number of the hour at which the action takesplace, the armatures oit the various-magnets are as many times attractedto the cores thereoil by the intermittent closing of the circuit bycontact of the lever with the terminal 34', and this series of movementsot each armature is transmitted to a. therewith associated stylus whichis disposed to engage the sheet 5 as will' now be described.

Each of the time-recording devices comprises an oscillatory trame whichis mounted'to move about a vertical axis between twohorizontal plates 44and 45 on the supporting structure fwhich serve to support the variousrecording instruments The oscillatory clement. 75 consists of an'uprightrod 7 8, the v ends oli which are journaled inopenings in the respectiveplates and upon which are secured two transverse bars 7 5 and 77 thelower one of which supports the electromagnet 35. 'The two bars areAconnected at their rear ends by .a poise 80l anda second poise 8l iscarried at the opposite end of the upper bar for the dpurpose of retard-`ing the movement of the frame about its axis oit' oscillation by theirinertial tendency to remain in a. state of rest. A coiled. spring 79which surrounds vthe portion of.

the spindle 78 above theiipper bar, is connected at its opposite endsrespectively `to the latter and to the top-platel 44, to yield-.

ingly oppose a movement ofthe frame about its axis, from itsrnormalposition o'f rest,

rlhe armature 83 of the magnet 35 is connected with a plate S4 which hasan articulate connection with a block 85 on the rod 7 8 and which isheld in its normal position by lmeans of a retracting spring l86disposed between the plate 84 and the upper transverse bar 76 'of theframe 75. Projecting forwardly from the armature S3, is the stylus-arm87 which is preferably composed of two convergent members which arecon.- f.

nected at their outer extremities. One of these members carries twobea-ring blocks 90 which are adjustablyv secured by set-screws 91, andwhich serve to supportashaftff) upon which the downwardly project-ingstylus 88 is'rotatably mounted. A spring 92 coiled around the shaft 89tends to maintain the stylus in its normal position in which it vslaiitsslightly from the perpendicular in engagement with a stop 93 on theadjacent block 90 (see Fig. 22) and a second stop 94 secured to theupper bar 76 of the frame is provided to limit the upward movement ofthe arm 87. `The magnet 35 being in a circuit with the contact 34 andthelever 33 of the striking movement of the clock as hereinbeforeexplained, attracts its armature..

each time the said, lever is actuated to strike the case and-duringmovement ot the armature, the point of the stylus 8S is brought inengagement witlrthe portion of the @disposed-upon the pla-tel 8, whichin 'consequence isfpunctured. When lthe point of the stylus enters thesurface oivthe recordl sheet, `thearmature583` has not yet completed'its downward movement with the -resultithat during` continuation of thes aid movement the.l stylus Vafter having` 'engaged the sheet, will bedeliected about its axis of rotation and againstthe action of the spring92 as' is shownin Fig; 23;

inasmuch as the sharp Ipoint of the stylus held against 'displacementinthe, perforation produced in the sheet' 5, it follows that its pointof connection 'withithe arm 87 must move laterally with relation to theperpendicular passing; through its point ci contact with the sheet orwith other words, that the oscillatory trame iscompelled to move aboutits 'axis until the circuit of the magnet is breken when the arm lwillmove upwardly impelled by the action et thespring 86 while the trame ismomentarily held in its. ad-v justed position by the inertia of thepoises 80 and 81,(see Fig. Before the spring 79 has had time to overcomethis inertial tendency, the magnet is again energized by the engagement.of the arm of the clocle movement with the sto`p Sli, during' its secondstroke with the 'result that the' stylus 88,A which, during the upwardmotion of the,` arm 87 had been returned to its original position by thespring 92, will again engage the pheet 5, but this time'at a pointspacedI from the puncture previously produced.

During the continued movementr of the armature toward the core of themagnet after the point of the stylus has entered the sheet, the stylusis again deflected as here: inbeicre explained and when duringsubsequent upward movement 4ofthe arm 87 in the period intervening'between two movements o't'the lever 33,1the stylus is again returned toits normal position, the frame.

l has again moved laterally a distance similar to that of its previousimevement, so that when by subsequent energizaticn of the magnet thearmature is again attractedthe pointof the stylus will engage the sheetat a point spaced from the second puncture,l (see Fig. 25), and thisoperation will be repeated until the lever 33 has completed its succesf,

spo'ndin''9,` in number. with that of the hour at which the action tookplace and inasmuch' by the cloclrmovement, it will. be seen that*v atthe expiration of a certain space of time, the sheet will bear a seriesof substantially equidistant impressions which individually indicate thesuccessive hours of the day at which -they were produced.

To prevent the possibility of forming a faulty record by the stylusstriking' beyond the edge of the sheet in case the latter becomeslaterally displaced, two time recording instruments are placed atopposite ends ot each series of signal recording units and arranged so'that' their stylus arms move laterally in the same direction.

` A portion of the record sheet as it appears after the instrument hasbeenin action for about one hour has been illustrated in Fig. 7 of thedrawings in which the nu, merals 93 indicate the marginal impressionsmade by the time-recording devices and 94 thosevproduced by the signalrecording units as will hereinafter be described. The portion lbetweenthe two successive time records `93, made respectively at the hours offour and five, represents,l of course, the distance the sheet traveledduring one hour of time,

and as the movement of the paper is at all times uniform and 1naccordance with that lofthe clock-mechanism, the exact time at 'which a.signal record'is made on the sheet,

maybe accurately established by ruling the.

, sheet transversely in'ac'cordance with aliquot divisions of the hour,either before or after it is placed in the instrument. In the e: ampleshown in the drawings, the spaces be tween these equidistant lines,designated by the numerals 95, each indicate five minutes of time and inaddition to the transverse lines, lines 96 ruled parallelt thelongitudivnal edges of the sheet are provided to separate the records'made. oy the different signal-recording units comprised in the series.By placing the numbers of the electric circuits with which the units arerespectively connected, at the top of the longitudinal columns, as isshown in the drawing, the sheet after it has been detached from the mainportion wound upon the spools of the instrument and properly dated, maybe used at any future time to indicate the exact time at which asignalwas transmitted :from a given station over a given circuit.

While the construction of the instruments by which the electric signalsare transmitted to the receiving instrument does 'not form part of thepresent invention, I have-,shown iii-'Fig 17 of the drawings,'themechanism of one of the call-boxes 100 of a lq'cal tele-- graphicsystem, an explanation dii,A which will aid to a great extent, in.conveying a ,clear understanding of theoperation ci? the st-ruineiit ofthe system, each time it is inatteso 5 signal recording devices whichwill herein alter be described, Each oit the call boxes above referredto isdesigncd to transmit a predetermined nui'nber to the receivinginactuated, by a succession' of electric impulses whichare produced bythe alternate closing and opening oil the normally closed line-circuitin which said boxes included. The

i() number of impulses transmitted each time the mechanism ot the boX isactuated equals the sum of the units contained in the several numerals,of which the number to be transmitted, is composed and the respective ivalues of these numerals are recorded or announced at the receiving endot the system 'by increasing the length of the intervals between thelastand first impulses of the numbers which correspond with the quantitiesof the units contained in two successive numerals, over the uniformperiods intervening vbetween the successive impulses whichA collectivelyrepresent the individual value'ot each numeral.

ln `the construction shown in Fig. l?, the

0 nipulation of an operating handle 38.

above described result. is obtained by means of a lrotary dislr 3G whichis actuated by a sliring when the normally blocked gear train 3'?,associated therewith, is released by ma- The dislc has a plurality ofperipheral notches 3i) which are arranged in groups, separated byenlaijged'spaces, in accordance with the numer-als contained in thenumber to be transmitted. ln theexainple shown, this 'nun'iber is 218and the spaces between lthe iii-st two notches and the third one, andbetween the latter and the'following group ot' eight notches areaccordingly made larger than 40 those between the notches con'iprised ineach group. The peripheral edge of the disk 36 is normally engaged bythe end of a resilientbrushflO, which is adapted to enter each of thenotches 39 during the rotary movement he dislr 'without coming inContact with e 'atiter, and the disk and the brush are c nnectedrespectively at opposite ends of a breaa in the normallyelf. lline-circuit. Each signal-recording unit has an electro- .-0 magnet Ll1the-windings oi which are included in the normally open local circuitvwhich through a relay 42 shown in the diagrammatic representation inFig.' 8 ot the drawings, is electrically connected with the .55line'voircuit in which the transmitting instruments are disposed so thatthe electric impulses caused by actuation of the latter, will excite themagnet 41 at intervals corresponding in length with the spaces'between66 the` notchesBQ in the disk'.

The electro-magnets L11 of the signal recording instruments are likethat of the 'iereiiibet'ore described time recording ce- 1vice, eachcured npon an oscillatory traine mounted to move about a Vertrtermittently cal axis between the plates le and 15 on the frame Theoscillatory elementlE-S consists oit spindle 4:6 theends oft' which arejournaled in openings in the plates, 44 and and upon which are securedtwo transverse bars l? and 48, the lowei' one of which supports theelectro-magnet 4l. rThe two bars are connected at their rear ends by apoise el) and the opposite end of the upper ba r carries a second poisetor the purpose hereinbetore described. A coiled spring 51 is connect-edat its opposite ends respec tively to the upper bail ET and to thetopplate lei toyieldingly oppose a movement ot the frame about its axis,and the armature 52 of the magnet 41 is connected with a plate 53 whichhas an articulate connection with a. block 5st on the rod 4&6, and whichis held in its normal position by means of a retra-cting spring',disposed between the plate 53 and the upper transverse bar 47 of theframe 43. Projecting ford wardly from the armature plate 53, is thestylus-arm 56, formed, similar' Ato that of the time-recordinginstrument, of two convergent members which at their connected forwardends carry the stylus A which, by means ot' a nut 58 may belongitudinally adf justed to vary the distance of its point from thesurface of the anvil plate S from which it is, normally, spaced. One ofthe members ot' the arm 56 carries two bearing-blocks 59 which areadjustably secured thereto by means of set-screws and'which serve tosupport a shaft 61 upon which a bell crank` (3Q is rotatably mounted.The normally upri ght arm G3, of the bell crank, which is oliset fromthe other laterally projecting arln 6l, is sharpened at its upper edgeand in the operation of the device, serves as a pawl which by engagementwith the teeth of a rack secured to a transverse bar 6G on the frame :2,moves the oscillatory frame 113 inabout its axis, as willhereinafter bemore fully explained. A. spring 6? coiled around the shaft 61, isconnected with the bell crank (52 and with one of the blocks 5S), toresiliently oppose a downward movenentofthe pawl-arm 63 about its axis.

rllhe normal position ofthe pawl-arni in which it slants slightly fromthe pcrpendicular, is determined by its engagement with the member ofthe arm 56 to which the blocks 59 are secured, and a stop (3S which is`fastened to the upper bar 47 ot the oscillatory frame, is disposed tobe engaged by the laterally extending arm 64; of the bell-crank for thepurpose of disengaging the pawl 63 from the rack when the arm 5G is inits u perniost position, as shown in Fig. 18 of t e drawings. The lowerbar 48 of the frame, supports in addition to 'the elcctroinagnet 41, asecond magnet 69 of smaller dimensions, whose ar ture YO secured to aplate 71 which is rcsiliently connected with a supthe armature 70 ofport 72 which by means of standerdel l is .rugidlyy mounted' uponthebase bte l5 Windings'ot both the magnets L are connected in the sainelocal eirenit es is only during the intervals 'between two suc-` cessiveenergizatlons of the magnets, While, when .by the downward movement ofthe anni, 5G, the stylus if? is brought in engagementwitli the sheet o,to produce an iunggues4 sion thereon, the :trame is looked. againstmovement about 'its by the contact of coro of lthe same.

` When the parts ot'the signal-recording device, es above described arein their normal postn et rest (see Fig. 18') the stylus arm ott-is bythe action of the spring 5 1 held in its highest position with themember S4 of the bell crank 52 lnengagement with the stop $8 and thepaul-member S3 sla-nting:

tree .trom contact With the teeth I lthe rack 55, ,While the oscillatoryframe is held yield; ingly at one end of the path in which it hesmovement, by means of theospring l coiled around the upper-.end of thespindle e6.. 'Y s y v`When actuation et the disk 36 of the transmittinginstrument shown in Fig. 17,'

a succession of electric impulses is transmitted through the linecircuit to the re-f lay l2 and 'thence through 'the local circuit tothetwomegnets 4l and 6l) of t" recording device, the oscillatory Jframerf-3 is at each impulse, locked against rotation by the engagement "ofthe armature 'YU of the small magnet with the core thereof eshereinbeore explained, after which the stylus arm 1s moved downwardly bythe 'attractive :torce of the ietAgl, to. bring the\point of the stylusIl? forcibly in engsge nienttvith the portion the sheet 5, at .the timedisposed upon the anvil. which, inconsequence is puncturedi During' thedoive Werd movement of the stylus 'arm the .mem-

ber Gt of the `bell.-cranlr moved free from' en 'agement Withthe to 68with the result that the pevvlfm'ember is returned by; the

spring 67, to its noinielposition in which f it slants slightly'from-theperpendicular 'engagement lwith the adjacent member of thearm 5 whichServes as a stoo to limit vits movement about its axis, asshown in Fig.

19. New, when by engagement of the brush 40 in thetransmittinginstrument, with the peripheral space on the dish 36, between twosuccessive notches 39m. the ma gnets lll end 69 aremomentarilyl'deuergised, the

'the magnet-'69 `with the ne signal fraine 43 is egein tree to .rotateabout its eine et oscillation, and the stylus arm isl impelled upwardlyby the retreating spring 55. During this nioveme'ntoi. the stylus arm,the sherp edge or" the substantiall lupright pavvl member 63 ot 'thebell crank 62 is brought in engagement with the teeth of the rack 65before the other member 64; engages thel stop olhwvith the result that.during the continued upward motion or the arm 56, the pavvl member isdeliected about 'its airis of rotation, against the action of ,the'spring 67 and,y inasmuch as the sharp edge of the said member is heldagainst dis.

lplacement in one oi' the interdental spaces of the raclsf, into whichit had entered, it follows that its point of connection with the armmust move laterally With-relation to the 'perpendicular passing throughits point ot' contact with the rack or, in fact, that the oscillatoryframe is compelled to nieve about its axis until by engegement of thecrank-member 6e with the stop 68, thel pavvl member is once more freedfrom `engagernent With the teeth of the rack. 'l-lovvever, before theann 56, Whose movement together with the trame sl-3, is retarded bytheinertiavof the two poises i9 and'50,

has had time to coinolete its u Ward movement, (see Fig. 20) the magnetsare again energized by the impulse transmitted thereto While the end ofthe brush 4:0 of the trensinitting instrument is in register With thenotch ot' the contact disk 36 next to the peripheral space With which itpre viously was in Contact, with the result hat the movement of theframe i3 with the arm is arrested While the paWl is still in engagementwith the rack, and vis thus held` against frotation While the stylus armis again moved downwardly by the attractive force of the magnet lll, undthe; stylus is once more brought' in engagement with the sheet 5, butthis time at a point spaced from the puncture previously made inaccordance with the length of the interval between thetWo impulses, byreason of the lateral movement .of tlfe frame in its plane oroscillation during the defiectory uio ment of the pawl, (seeFig. Zll= tcommencement-.of the Anext period olf' energization of the magnets, thesharp l of the pavvl is 'againbrought in ment with the. reci: at a.point perpfL larly above the same While it 'was lower position and`before the spring Si the frame 43', has 'hadthe time to overcome theinertial tendency of the poises to 're'- main. in e state of rest, andwhen, during subsequent deflection of the pawl, the magnets are againexcited, the stylus Willbe brought in Contact With-the paper at a pointspaced from the second puncture in accordance with the length of theinterval between the two impulses, and this action Will nel f notarse Yi be repeated until the entire signal-is transf with thenumber ofnotches in the contact disk of the transmitting instrument.

It will have been observed that the tent of the lateral movement of the56 of the frame 43, duringthe period intervening between two successiveimpulses is proportionate to the angle of dellection oi' 'the pawl andin consequence. to the duration of the `said period, so that when theintervalbetween two electric impulses is lengthened the space betweenthe respective punctures in the sheet 5 will be' proportionatelyincreased. The result is that the unequal spacing' between the notches39 'on .the dislr 36 will bveuaccurately represented in the record madeupon the sheet and that` the number transmitted may be read at any timefrom the sheet by separately addingthe number of punctures comprised ineach 1ou v e. vA platel 74e .which extends transversely overthe sheet inproximity to the line along whichit is engaged by the styli of thevarious recording devices, is provided to rest upward movement of thesheet with the stylus when the latter Vis being separated therefrom, andit will be understood that the longitudinal movement of the sheet is solslow in comparison with the rapidity with whichthe succession ofimpulses arc transmitted and the puncturcs are produced that the latterwill be arranged practically in one straight line transverse to thedirection in which the paper is impelled over the anvil-plate 8.

In the diagrammatic view/Figa 8 of the drawings,two circuits have. eenshown in connection with a corresponding number ot signal-recordingrunits of the receiving' Ainstrument and with two time recording de-rvices, the various magnets and contact-members having' been indicated bythe'same reterence numerals, employed inthe foregoing description.' Thetwo normally closed lincor outside-circuits, are representedrespectively by light and heavy dash-dot lines, the normally open, localcircuits respectively by full and broken lines, the circuit oli-the timecontrolled mechanism by full lines, with the exception ot that partwhich is provided by thc metallic frame vand operating` parts of theclock, and which has been shawn in light broken lines. The reference.numeral JT designates the source oiC electricity oi the linecircuits and91- that ot the local-circuits. Thc hereinbeiore referred to relays by'which the main andlocal circuits are electrically connected aredesignated by the numerals xi2, 'a switch by which if so de sired, theclock-circuit may be broken, is designated in Figs. 8 and l by thenumeral 99 and the transmitting instruments connoci ed in the linecircuit arel indicated by the reference characters 100.

As the operation 'of theinstrument has been referred to at intervalsduring the courseoi the foregoing description, itwill only be necessaryto outline it briefly at this point. The rollsotl paper or othermaterial having been mounted upon the spools 6', in

the manner shown in Fig. 2, their ends are drawn over the guide -rollers7v and the upper surfaces ot the intermediate anvil-plates 8, andsecurely lfastened to the winding drums 10 by means of the clamps 9.yThe clock-'movement in electrical association with the feedingmechanism, .imparts anintermittent movement to the winding drums at auniform. rate ot speed, and the time-re cordinpj instruments which areactuated by the striking movement of the clock will by the production ota series Aof equidistant groups ot punctures, separately correspondingwith `the numbers of the hours atgwhich they were made, establish apermanent rec- `ord of the time at` which the signals sent from thetransmission instruments were received. Each time'one ci' thetransmission instruments is actuated, its number is accurately recordedinthe-column of the 'sheet corresponding with the Vcircuit inl which itis located, by the spaced groups of punctures which present intelligiblerepresentations of the numbers transmitted.l

it will thus be observed that the invention provides an entirelyautomatic instrument for accurately and properly recording all theelectric signals and the time at which they were received during an'indefinite length of time, requiring no attention except the winding' ofthe clock movement which, it so desired, may beautomatically.accomplished by connecting' it with a masterclocl, andthat by severing the portion of the sheet which has passed over theanvil plate` from .the roll at the termination of a determinate periodof time and properly dating it, it may at any iuture time, be pro-`ducetl to provide an accurate and indis-tputable record of the timcandday at which a signal was transmitted from a given sta tion.

Having thus described our invention wha-ly we `claim and desire tosecure by Letters- Patent is:

l.' ln a telegraphic receiving instrument, record sheet having amovement in one direction, adevice for recording telegraphic 2.Infatelegraphic lreceiving instrument, a record sheet' havinga movementin 'one direction, a device for recording telegraphic messages upon saidsheet, "a relatively -iixed contrivance for producing'fimpressions upony said sheet, and a v,move'ment adapted frop'ejrin odically actuate saidcoli-trivance, inv suce'es'- l sions which vary numerically' in.accordance with the numbers of the hours' at which they'. areproduced.`

3. In a telegraphic receiving instrument, a record 4s heet having-amovement in one direction, adevice for recording telegra hic messagesupon said sheet, afzfrelati,vely-'- Xed electrical contrivance torproducing impres sions upon said sheet, and a movement lin a circuitwith said contrivance and adapted tol periodically transmitsuccessionsof velectric impulses to the same, whichv vary numeri,callyfin the'mrder in which they are produced.

4. `vIn a telegraphic receiving instrument,

.a record sheet having a movement in one` direction, a device ,forrecording .telegraphic messages upon said sheet, a relatively fixed:electrical contrivance for producing impressions upon said sheet, and aclock movement in a circuit Withsaid contrivance, adapted toperiodically transmit successions of electric impulsesto the same, Whichvary numerically vinlaccordanc'e with the numbers 'of the hours at whichthey are produced.

-5. In a telegraphic receiving instrument, a record sheet lhaving amovement in one direction, a device for recording telegraphic messagesupon the said sheet, a relatively iixcd contrivance for producingimpressions upon said sheet, and a clock including a striking movementconnected With the said contrivance to actuate it periodically insuccessions numerically in accordance with the numbers of the hours ofthe day.

6. In a t'elegraphic receiving instrument, a record-sheet having amovement in one direction, a device for recording telefri'apliicmessages upon vthe said sheet, a relatively fixed electrical contrivancefor producing impressions upon said sheet, and a clock in? .cluding astriking ino-vement, in a circuit with said' contrivance to actuate thesaine in correspondence With the motions ot the hammer-lever includedtherein.

7. In a telegraphic receiving instrument, 'a record-sheet having amovement in one direction, a device for recording telegraphic messages.upon lthe said sheet, an electromagnet, a vmember connected with thearma l ture thereofV to produce impressions-upon, the said sheet, famechanism to automatically change the position of the saidmember.relative to an impression produced upon said sheet, p rior to theproduction' of the next'.

impression during a succession of impulses transmitted to said magnet,and a clochmovement in a circuit with said magnet to periodicallytransmit thereto successions ont impulses varying numerically in theorder in which they are produced.

S. vIn a' teleg'raphic receiving instrument, a record-sheet yhaving amovement in one direction, a device for recording telegrap'hi'c messagesupon the said sheet, anelectromagnet, a member sonnected with thearmature thereof -to produce impressions upon ,the said sheet, amechanism to automatically change the positionof the said member rela-`tivejto an impression producedupon said sheet, prior to theproductionof the next impression during a succession 'ot impulses transmitted tosaid magnet, and a clockmo'vement' in' a circuit with said magnet toperiodically transmit thereto successions of impulses vary-ingnumerically in accordance ,Wit-h the numbers of the hours at which theykare produced.

l9. In a telegraphic receiving instrument, .a record-sheet having amovement in one directiom'a device for recording telegraphic messagesupon the vsaid sheet, anA electromagnet, a. member connected With thearmature thereof to produce impressions upon `the said sheet,'armechanism to automatically change the position of the said inemberrelative4 to an impression'v produced upon said sheet, priortc theproduction of the next impression during a succession of impulsestransmitted vto'said magnet, and a` clock including a striking movement,in a circuit with said magnet to energize the same in correspondenceWith the movements of the hammer lever included therein.

10. In' a telegraphic receiving instrument, a record sheet having `amovement in one direction, a device for recording telegraphic messagesupon the said sheet, an electromagnet, a member connected With thearmature thereof to produce impressions upon the said sheet, almechanism to auton'iatically 'change the position ot' the said memberrelative to an impression produced upon said sheet, prior to theproduction of the next impression during a succession ot impulsestransmitted to said magnet, a clock including a striking movement in acircuit with said magnet to energize the same periodically insuccessions corresponding numerically With the numbers ot the hours oithe day.

ll. In 'a telegraphic receiving instrument, a recordsheet having amovement in one di'- rection, a device for recording telegraphicmessagesupon the said sheet, a relatively fixed electrical contrivancefor producing impressions upon said sheet, and a clcclr including astriking movement, in a circuit with vsaid contrivance to act-nate thesame periodically in successions corresponding l ruimerically with thenumbers ot the hours of' the day. Y

/1Q.In a \teiegrap`hic receiving instru4 130 ment, tWo record-sheets,means for moving said sheets in unison, devices for recording vtel'egraphic',messages upon the respective sheets, relatively iXedcontrivances for producing impressions upon the respective sheets, and aclock movement adapted to 'periodically actuate said contrivances in;

successions varying numeriallyin the order' in which they are produced.

13. Vln a telegraphic receiving instrument,

a record sheet, a device for recording telegraphic messages thereon, aclock including ya time-measuring movement and astrikingv A movement, amechanism actuated by said 'i5 time measuring movement to move saidsheet, anda contrivance orproducing impressions upon the sheet,connected to be actuated in accordance with the motions of vthe hammerlever included in said 'striking movement. s

14. In a telegraphic receiving instrument,

,a record-sheet, a device for recording tele graphic messagesjhereon, acontrivance for producing impressions upon' said sheet, a

clock movement connected with said contrivance to periodically actuatethe same in s'uccessions varying nuinerically in the rorder in whichthey are produced, and mechanism associated with the said movement formovv ing said sheet. py 15. In a telegraphic receiving instrument,

a record-'sheet having a movement in one direction, a device forrecording telegraphic messages upon the said` sheet, an electromagnet, amember connected with the armature thereof to produce impressions uponsaid sheet, a mechanism-.actuated by the movement of said armature, tochange the positiono the said member relative to an 40 impressionproduced upon said sheet, prior to the production' of the nextimpression during a succession of electric impulses transmitted. tosaid` magnet, and a 'clock' movementin a circuit with said magnet toperiodically transmit thereto successions of f .impulses varyingnumericall,1 in the order in which they are produced.

16. The combination With a telegraphic transmitter, of a 'receivinginstrument including an electromagnet 1n a circuit with 50 saidtransmitter, a member associated with the armature of said magnet forproducing impressions upon a suitable surface, and

l'means actuated by the movement of said armature to change the positionof the said member relative to an impression produced upon said surface,'prior to the production of the next impression When a succession ofimpulses are transmitted to the said magnet.

17. ln atelegraphic receiving instrument, a record sheet having a`movement in one direction, anelectro-magnet, a member asso ciated withthe armature thereof to produceIW y impressions upon said sheet, andmeans .M actuated by the movement of said armature to move the saidmember after an impression is produced upon said sheet, in a directiontransverse to tne direction of move- Inen't of the same, and prior tothe production of the next impression when a succession of impulses aretransmitted' to vsaid magnet.

18.` The combination with atelcgraphicl transmitter, of a receivinginstrument including an electro-magnet in a circuit with saidtransmit-iter, a member associated With the armature 'of said magnet forproducing impressions upon a suit-able surface, Aand means actuated bythe movement oit the armature of the said magnet, to move the SQ saidmember step by step by changing its position relative to each impressionproduced upon said surface, prior to the yproduction of the nextsucceeding impression when succession of impulses are transmitted to thesaid magnet.

In testimony whereofvve have atiixed our signatures in presence of twowitnesses.

LLIAM W. ALEXANDER. EDWARD T. KEIM.

Witnesses:

S. C. CHmsrrAN, F. H. Cono.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner oi Patente,

' Washington, D. C."

